Hi
Could someone please help with these function problems - it would be greatly appreciated. I'm having some trouble.

f(x) = 2x + 5 g(x) = 3x+1 h(x) = 1 + 2/x
h o h(x) = ? I put 1 + 2/(1 + 2/x) but that's not the answer
h o f(x) = ? I put 1 + 2/(2x+5) but seems I'm wrong
h o g(x) = ? I put 1 + 2/(3x+1) but not right also

I'm ok with one's like f o g(x) but having trouble with the h ones.

Inverse of f(x) = 1/(2x-5)

Given f(x) = 2x + 5 g(x) = 3x + 1 h(x) = 1 + 2/x express
f o h^-1(x)
g^-1 o f^-1(x)
f o g^-1(x)

Inverse of f(x)=x^2 + 2x + 5 I got f^-1(x) = sqrt((x-5)/2) but that's wrong

Any assistance or advice would be great. Thanks.